JP6567706B2 - Movement determination system and movement determination method - Google Patents

Description

  The present invention relates to a movement determination system and a movement determination method.

  There has been a communication service in which a small cell base station, which is a relay device, is provided between a mobile body and a macro cell base station (see, for example, Patent Document 1). The installation of small cell base stations has improved the indoor communication environment such as buildings.

Japanese Patent No. 6025892

  Since the relay device is installed by a wireless communication carrier, the user should not move it arbitrarily. However, in reality, the user moves the relay device without permission and uses it. The relay device has an installation position registered so that an emergency response vehicle can rush when an emergency call is received from a mobile body. If the relay device is moved without permission by the user, the location of the registered relay device and the actual relay device position are different, so the emergency response vehicle cannot reach the location of the mobile body that made the emergency call. there is a possibility.

  Therefore, an object of the present invention is to provide a movement determination system and a movement determination method that can determine whether or not a relay device has moved even if the user moves the relay device without permission.

A movement determination system according to one aspect of the present invention is a movement determination system that determines whether or not a relay apparatus that is wirelessly connected to a mobile body has moved, and the relay apparatus can wirelessly connect to a donor cell that is wirelessly connected. An acquisition unit that acquires and accumulates permissible cell information that identifies possible neighboring cells at a predetermined timing and a plurality of permissible cell information acquired at different timings are compared with each other to determine whether the relay device has moved or not A determination unit , wherein the determination unit is a donor cell in the allowed cell information acquired at a second timing that is later than the first timing when the cell recorded as an adjacent cell in the allowed cell information acquired at the first timing is As a result, it is assumed that the donor cell has been changed between the first timing and the second timing, and the relay device has not moved. It determines that.

  According to this aspect, the acquisition unit acquires and accumulates permissible cell information for specifying the donor cell and the adjacent cell at every predetermined timing. The determination unit determines whether or not the relay device has moved by comparing a plurality of allowed cell information acquired at different timings. Therefore, even if the user moves the relay device without permission, it is possible to detect whether the relay device has moved.

Determine tough, if the cell is recorded as an adjacent cell in the permissible cell information acquired by the first timing it has been recorded as the donor cell in the obtained allowable cell information at a second timing later than the first timing Alternatively, it may be determined that the relay device is not moving, assuming that the donor cell is changed to an adjacent cell between the first timing and the second timing.

The determination unit, when the cell recorded as the adjacent cell in the allowable cell information acquired at the first timing is not recorded as the donor cell in the allowable cell information acquired at the second timing later than the first timing, and When the cell recorded as the donor cell in the allowed cell information acquired at the first timing is recorded as an adjacent cell in the allowed cell information acquired at the second timing, the first timing and the second timing are used. It may be determined that the relay device is not moving, assuming that a cell is newly established between

The determination unit, when the cell recorded as the adjacent cell in the allowable cell information acquired at the first timing is not recorded as the donor cell in the allowable cell information acquired at the second timing later than the first timing, and When the cell recorded as the donor cell in the allowable cell information acquired at the first timing is not recorded as an adjacent cell in the allowable cell information acquired at the second timing, the allowable cell information acquired at the first timing The presence / absence of movement of the relay device may be determined based on the matching rate between the cell recorded as the adjacent cell and the cell recorded as the adjacent cell in the allowed cell information acquired at the second timing in FIG. Good.

  The permissible cell information corresponding to a predetermined relay device may be arbitrarily resettable.

  You may comprise so that determination of the presence or absence of a movement about a predetermined relay apparatus can be prohibited arbitrarily.

  The allowable cell information may be arbitrarily changed.

  You may make it further provide the wave-stopping part which stops the connection to a moving apparatus with respect to the said relay apparatus determined to be moving.

  The wave stopping unit may prohibit the stop of the connection to the mobile device for a predetermined relay device.

A movement determination method according to another aspect of the present invention is a movement determination method for determining whether or not a relay apparatus that is wirelessly connected to a mobile body has moved, and wirelessly connects to a donor cell to which the relay apparatus is wirelessly connected. Acquiring and accumulating permissible cell information for identifying adjacent cells that can be performed at a predetermined timing, and comparing a plurality of permissible cell information acquired at different timings to determine whether the relay device has moved or not. possess determines the step, and the determining, the allowable cell information cell which is recorded as an adjacent cell in the obtained allowable cell information at the first timing has been acquired at the second timing later than the first timing If it is recorded as a donor cell in FIG. 1, it is assumed that the donor cell is changed between the first timing and the second timing. It is determined not to be moved.
A movement determination system according to another aspect of the present invention is a movement determination system that determines whether or not a relay apparatus that is wirelessly connected to a mobile body has moved, and wirelessly connects to a donor cell to which the relay apparatus is wirelessly connected. An acquisition unit that acquires and accumulates permissible cell information that identifies adjacent cells that can be received at a predetermined timing, and compares a plurality of permissible cell information acquired at different timings to determine whether or not the relay device has moved A determination unit configured to determine whether the cell recorded as an adjacent cell in the allowable cell information acquired at the first timing is acquired at a second timing that is later than the first timing. If it is recorded as a donor cell, it is assumed that the donor cell is changed to a neighboring cell between the first timing and the second timing. It is determined not to be dynamic.
A movement determination system according to another aspect of the present invention is a movement determination system that determines whether or not a relay apparatus that is wirelessly connected to a mobile body has moved, and wirelessly connects to a donor cell to which the relay apparatus is wirelessly connected. An acquisition unit that acquires and accumulates permissible cell information that identifies adjacent cells that can be received at a predetermined timing, and compares a plurality of permissible cell information acquired at different timings to determine whether or not the relay device has moved A determination unit configured to determine whether the cell recorded as an adjacent cell in the allowable cell information acquired at the first timing is acquired at a second timing that is later than the first timing. When the cell is not recorded as a donor cell, and the cell recorded as the donor cell in the allowable cell information acquired at the first timing is the second tag. If the acquired allowable cell information in timing has been recorded as an adjacent cell is determined to as a cell is established between the first timing and the second timing, the relay device is not moving.
A movement determination system according to another aspect of the present invention is a movement determination system that determines whether or not a relay apparatus that is wirelessly connected to a mobile body has moved, and wirelessly connects to a donor cell to which the relay apparatus is wirelessly connected. An acquisition unit that acquires and accumulates permissible cell information that identifies adjacent cells that can be received at a predetermined timing, and compares a plurality of permissible cell information acquired at different timings to determine whether or not the relay device has moved A determination unit configured to determine whether the cell recorded as an adjacent cell in the allowable cell information acquired at the first timing is acquired at a second timing that is later than the first timing. When the cell is not recorded as a donor cell, and the cell recorded as the donor cell in the allowable cell information acquired at the first timing is the second tag. When the allowed cell information acquired by the timing is not recorded as a neighboring cell, the neighboring cell in the allowed cell information obtained at the first timing and the neighboring cell information obtained at the second timing. The presence / absence of movement of the relay device is determined based on the matching rate with the cell recorded as.
A movement determination system according to another aspect of the present invention is a movement determination system that determines whether or not a relay apparatus that is wirelessly connected to a mobile body has moved, and wirelessly connects to a donor cell to which the relay apparatus is wirelessly connected. An acquisition unit that acquires and accumulates permissible cell information that identifies adjacent cells that can be received at a predetermined timing, and compares a plurality of permissible cell information acquired at different timings to determine whether or not the relay device has moved A determination unit that determines whether or not there is a movement of a predetermined relay device.

  ADVANTAGE OF THE INVENTION According to this invention, even if a user moves a relay apparatus without permission, the movement determination system and movement determination method which can determine the presence or absence of the movement of a relay apparatus can be provided.

1 is a basic system diagram of a movement determination system according to an embodiment and a wireless network to which the movement determination system is applied. It is explanatory drawing of the relationship between the donor cell and adjacent cell in this embodiment. It is a flowchart of the movement determination method which concerns on this embodiment. It is a sequence diagram explaining the movement determination system which concerns on this embodiment. It is a flowchart of the adjacent cell comparison in this embodiment. It is explanatory drawing of the time series image in the comparison of permissible cell information. It is explanatory drawing of the wave stop instruction | indication of the relay apparatus in this embodiment. It is explanatory drawing which illustrates the specific example of adjacent cell comparison.

  A preferred embodiment of the present invention will be described with reference to the accompanying drawings. In addition, in each figure, what attached | subjected the same code | symbol has the same or similar structure.

[Definition of terms]
The main terms used in this specification are defined as follows.
"Mobile": a mobile communication terminal, also referred to as UE (U ser E quipment). Specifically, it is a device having a mobile phone function such as a smartphone or a feature phone. In the following embodiments, they are referred to as “terminal devices”.
“Relay device”: means a small cell base station. In the LTE standard, it is also referred to as HeNB (Home eNodeB).
“Cell” means a macro cell base station (MCC). In the LTE standard, it is also referred to as eNB (eNodeB). In particular, a cell in which a communication path is established for the relay apparatus is referred to as a “donor cell”. In addition, a cell in which communication is not established with the relay apparatus at the present time but communication is possible is referred to as an “adjacent cell”. Further, the donor cell and the neighboring cell are collectively referred to as “allowable cell” in the sense that communication is possible. Data in which all allowed cells at a certain point in time for one relay apparatus are recorded is referred to as “allowed cell information”.

[System configuration]
(Wireless network)
First, with reference to FIG. 1, a radio network to which a movement determination system 100 according to an embodiment of the present invention is applied will be described. FIG. 1 is a basic system diagram of a movement determination system according to the present embodiment and a wireless network to which the movement determination system is applied.

  As shown in FIG. 1, the radio network of the mobile communication system 200 includes a terminal device 10, a relay device 20, and a macro cell base station 30.

  The terminal device 10 is a mobile communication terminal used by a user. In FIG. 1, it is assumed that the terminal device 10 is within the communicable range of any relay device 20.

  The relay device 20 is a node that relays between the macrocell base station 30 and the terminal device 10, and is installed indoors such as a building in order to improve the communication environment. The relay apparatus 20 is a node that constitutes one node in the wireless network and establishes backhaul wireless communication with the macrocell base station 30. The relay device 20 is installed by a wireless communication operator, and the individual installation positions of the relay device 20 are registered and managed by the wireless communication operator.

  The relay device 20 provides a packet communication service (for example, a voice packet communication service, a multimedia service, etc.) to the terminal device 10. The cell size formed by the relay device 20 is smaller than that of the macro cell base station 30, and a communication area having a radius of several meters to several tens of meters is constructed.

  The macrocell base station 30 is configured to establish direct access wireless communication with the terminal device 10 in addition to establishing wireless communication with the relay device 20. The macrocell base station 30 constructs a communication area with a radius of several hundred meters to several tens of kilometers.

  FIG. 2 is an explanatory diagram of the relationship between donor cells and adjacent cells in the present embodiment. In FIG. 2, a broken-line circle indicates a communicable area M of the relay device 20. The macrocell base station 30 existing in the communicable area M is an allowed cell that can establish a communication path from the relay device 20. The macrocell base station 30 to which the relay device 20 in FIG. 2 is wirelessly connected is the donor cell 30-1. In addition, for the relay device 20 in FIG. 2, the macro cell base stations 30 that have not established a communication path but can be wirelessly connected are the adjacent cells 30-2, 30-3, and 30-4. In FIG. 2, four allowed cells are illustrated, but the number of allowed cells varies depending on the installation environment of the relay device 20 and the number of allowed cells is not limited. In the following description, when the description is made without distinguishing the donor cell and the adjacent cell, it is simply referred to as “macro cell base station”.

(Movement judgment system)
Next, with reference to FIG. 1 again, the movement determination system 100 according to the present embodiment will be described. As illustrated in FIG. 1, the movement determination system 100 according to the present embodiment is a system that determines whether or not the installation position of the relay device 20 that is wirelessly connected to the terminal device 10 has moved. The acquisition unit 40 and the determination unit 50 With. The movement determination system 100 is provided in the core network of the mobile communication system 200.

  The acquisition unit 40 is, for example, an application system that operates on a Windows OS and is constructed by an OSS (Operation Support System) or the like, but is not limited to the OS. The acquisition unit 40 is configured to acquire and accumulate permissible cell information that identifies a donor cell and an adjacent cell at predetermined timings. Specifically, for example, the acquisition unit 40 is set to scan all the relay devices 20 at the timing of once / one hour to acquire and accumulate the allowable cell information, but the acquisition timing is changed. Is possible. Cells to be recorded as adjacent cells are selected according to a predetermined standard, for example, an index such as electric field strength or radio wave quality. For example, the acquisition unit 40 selects, as the “adjacent cell”, cells whose index is counted from the top for each frequency band and reaches a predetermined rank, and records it as allowable cell information.

  The acquisition unit 40 records the allowable cell information acquired by scanning as a list (Scan List) in a predetermined format, for example, a csv file format. In Scan List, information of all allowed cells that can communicate with each relay device 20 is recorded. Details of the Scan List will be described later.

  The determination unit 50 is an application system that operates on a Linux (registered trademark) OS, for example, and includes a database 60. The determination unit 50 acquires allowable cell information from the acquisition unit 40 and stores it in the database 60. Whether the database 60 is a donor cell for specifying data for an allowable cell acquired for each relay device 20 for the first time, data for specifying n allowed cells acquired after that, and data for specifying a recently acquired allowable cell are donor cells. It is stored as allowed cell information along with whether it is a neighboring cell. Also, the determination unit 50 refers to the database 60 and determines whether or not the relay device 20 has moved by comparing a plurality of allowed cell information acquired at different timings. Details of the determination by the determination unit 50 will be described later.

  The file transfer from the acquisition unit 40 to the determination unit 50 uses a technique for safely transferring data to a remote place using encryption or an authentication procedure. For example, SFTP (SSH File Transfer Protocol) is adopted as a protocol for securely transferring files between computers using an SSH (Secure Shell) mechanism.

  The determination unit 50 is configured to have a function capable of arbitrarily resetting allowable cell information corresponding to a predetermined relay device 20. Specifically, it has a function of erasing allowed cell information (data specifying a donor cell / adjacent cell) associated with a specific relay apparatus 20. The next data collection after data erasure is treated as the first acquisition. This function is an optional component.

  Further, the determination unit 50 is configured to arbitrarily prohibit the determination of the presence or absence of movement of the predetermined relay device 20. Specifically, the determination unit 50 holds in advance a determination skip list for registering a relay device that is not desired to be moved. And the determination part 50 prohibits a movement determination about the relay apparatus 20 currently recorded on the determination skip list | wrist. For example, if there is a relay device 20 that you do not want to stop for some special reason, it is registered in the determination skip list. This function is an optional component.

  Further, the determination unit 50 is configured to be able to arbitrarily change the allowed cell information. Specifically, this is a function of appropriately changing the registration status of donor cells and neighboring cells as the allowable cell information. Specifically, the wireless communication operator can perform manual maintenance that refers to and changes the allowed cell information separately from the management of the determination unit 50. This function is an optional component.

  In addition, the determination unit 50 may further include a wave stopping unit 70 that stops the connection to the terminal device 10 for the relay device 20 determined to be moving. The stop unit 70 transmits a stop instruction request to the acquisition unit 40, and prohibits connection of the predetermined relay device 20 to the terminal device 10. The stoppage execution control function is basically set to “necessary” (executable), but can be set to “not” (executable) when only the relay device 20 is to be checked. . This function is an optional component. Details of the stop instruction will be described later.

[System Operation and Movement Determination Method]
Next, the movement determination method according to the present embodiment will be described together with the operation of the movement determination system 100 according to the present embodiment.

  The movement determination method according to the present embodiment is a movement determination method for determining whether or not the installation position of a relay apparatus that is wirelessly connected to a terminal apparatus is moved. The movement determination method according to the present embodiment includes the steps of acquiring and storing permissible cell information that identifies a donor cell to which a relay device is wirelessly connected and an adjacent cell that can be wirelessly connected at a predetermined timing; And comparing a plurality of allowed cell information acquired at different timings with each other to determine whether or not the relay device has moved. This will be specifically described below.

  With reference to FIG. 3 and FIG. 4, the movement determination method according to the present embodiment will be described. FIG. 3 is a flowchart of the movement determination method according to the present embodiment. FIG. 4 is a sequence diagram illustrating the movement determination system according to the present embodiment.

  As illustrated in FIG. 3 and FIG. 4, the acquisition unit 40 includes neighboring cells 30-2, 30-3, and 30-4 that can wirelessly connect to the donor cell 30-1 to which the relay device 20 is wirelessly connected. Is acquired and stored at predetermined timings (S210).

  The acquisition unit 40 manages the information of all allowed cells using a scan list in the csv file format. Examples of identification information for identifying a cell include a node name (Node Name (HeNB)), a cell ID (Cell Indentity), and an EARFCN value. The type of whether the cell is a donor cell or an adjacent cell is determined by a predetermined flag, for example, Scan List Rank. The data of the adjacent cells 30-2, 30-3, and 30-4 are output for each frequency band.

  The determination unit 50 acquires the allowed cell information from the acquisition unit 40 at every predetermined timing and manages the data (S220). The allowed cell information is transferred from the acquisition unit 40 to the determination unit 50. The determination unit 50 stores the transferred allowable cell information in the database 60 as a Scan List.

  The determination unit 50 reads the determination target data from the database 60 (S230). That is, referring to the allowed cells in order from the first relay device 20 recorded in the Scan List, the determination processing of steps S250, S260, and S270 is performed, and then the reference / determination processing of the next relay device 30 is performed. The loop to repeat is repeated (S290). For the relay device 20 included in the determination skip list, the determination processing in steps S250, S260, and S270 is not performed, and the process proceeds to the next relay device 20.

  The determination unit 50 compares the plurality of allowed cell information acquired at different timings with respect to the relay device 20 to be examined, and determines whether the relay device 20 has moved (S250, S260, S270). The determination of the determination unit 50 is performed every hour. The comparison of the allowable cell information basically compares the allowable cell information acquired at the first timing with the allowable cell information acquired at the second timing later than the first timing.

  With reference to FIG. 6, the comparison between the allowable cell information acquired at the first timing and the allowable cell information acquired at the second timing will be described using a time-series image. FIG. 6 is a diagram illustrating a comparative example of allowable cell information in time series. As illustrated in FIG. 6, when the relay device 20 is activated for the first time, the determination unit 50 obtains allowable cell information for identifying the allowable cell for the activated relay device 20 and records it in the database 60 as initial data. Next, when the determination unit 50 receives a second notification from the relay device 20 at a predetermined timing, the determination unit 50 obtains allowable cell information for specifying the allowable cell for the relay device 20 detected for the second time as second-time data. Save in database 60. Then, the determination unit 50 refers to the database 60 and compares the second data with the first data. Thereafter, normally, the previously acquired allowable cell information is compared with the newly acquired allowable cell information.

  However, if communication with the relay device 20 is not successful, that is, if communication is impossible, the determination unit 50 records the relay device 20 in the database 60 together with a flag indicating that data acquisition is impossible. When the relay device 20 is restored, the determination unit 50 collates whether the relay device 20 has been recorded as data acquisition impossible in the past. If it is recorded that data acquisition is impossible, the determination unit 50 compares the data acquired immediately before the point at which communication is impossible with the data newly acquired this time.

  Referring to FIGS. 3 and 4 again, the determination unit 50 compares the allowable cell information acquired at the first timing with the allowable cell information acquired at the second timing, and the donor cell 30-1 determines that the allowable cell information It is determined whether or not the information is included (S250). When the donor cell 30-1 is included in the allowed cell information (S250 / YES), the process proceeds to reading of the next line of the Scan List in order to proceed to the determination on the next relay apparatus (S290).

  When the donor cell 30-1 is not included in the allowed cell information (S250 / NO), the allowed cell information acquired at the first timing and the allowed cell information acquired at the second timing are compared with each other (S260). That is, it is compared whether or not the previous donor cell and the current donor cell are the same. As a result of the comparison, if the previous donor cell matches the current donor cell (S260 / YES), it is determined that the relay device 20 has not moved, and the next row of the Scan List is read in order to move to determination regarding the next relay device. (S290).

  On the other hand, when the previous donor cell is different from the current donor cell (S260 / NO), the adjacent cells of the allowable cell information acquired at the first timing and the allowable cell information acquired at the second timing are compared (S270). ). The reason why the adjacent cells are compared is to suppress erroneous detection by the determination unit 50.

  In the case where the donor cells are different, in addition to the problem that the relay device 20 that is the object of determination in the present embodiment has been moved, if the donor cell fails and is handed over to an adjacent cell, the proximity of the relay device 20 When a new cell is installed and handed over to this new cell, the relay device 20 is restarted autonomously or forcibly, the donor cell is changed depending on the radio wave state at the time of restart, and the relay device 20 It is conceivable that the donor cell is changed by shutting off / turning on the power source and performing a cell rescan.

  FIG. 5 is a flowchart of adjacent cell comparison in the present embodiment. FIG. 5 shows details of determination in the adjacent cell comparison (S270) in the overall flowchart of FIG. First, as shown in FIG. 5, the determination unit 50 determines whether the new donor cell is included in the old adjacent cell (S271). When the new donor cell is included in the old adjacent cell, the cell recorded as the adjacent cell in the allowable cell information acquired at the first timing is recorded as the donor cell in the allowable cell information acquired at the second timing. This is the case.

  When a cell recorded as an adjacent cell in the allowed cell information at the first timing is recorded as a donor cell in the allowed cell information at the second timing (S271 / YES), the first timing, the second timing, It is determined that there is no problem as the donor cell was changed during the period. That is, in this case, the donor cell is changed to the adjacent cell due to the failure of the donor cell, and since the new donor cell is included in the old adjacent cell, it can be determined that the relay device 20 has not moved ( (Case # 1 in FIG. 7 described later). When the determination unit 50 determines that there is no problem (no movement), the process proceeds to the check on the next line of the Scan List (S290).

  When a cell recorded as an adjacent cell in the allowed cell information at the first timing is not recorded as a donor cell in the allowed cell information at the second timing (S271 / NO), the determination unit 50 determines that the old donor cell is a new neighbor. It is determined whether the cell is included (S272). When the old donor cell is included in the new adjacent cell, the cell recorded as the donor cell in the allowable cell information acquired at the first timing is recorded as the adjacent cell in the allowable cell information acquired at the second timing. This is the case.

  When the cell recorded as the donor cell in the allowed cell information acquired at the first timing is recorded as an adjacent cell in the allowed cell information acquired at the second timing (272 / YES), the first timing and the first It is determined that there is no problem, assuming that a cell has been newly established between the two timings. In other words, in this case, the donor cell is changed by the rescan of the relay device 20 as a result of newly establishing the macro cell base station 30 in the vicinity. Since the old donor cell is included in the new adjacent cell, it may be determined that the relay apparatus 20 has not moved (case # 2 in FIG. 7 described later). When the determination unit 50 determines that there is no problem (no movement), the process proceeds to the check on the next line of the Scan List (S290).

  When the cell recorded as the donor cell in the allowable cell information acquired at the first timing is not recorded as the adjacent cell in the allowable cell information acquired at the second timing (272 / NO), the old and new adjacent cells Is determined (S273). The coincidence rate between the old and new neighboring cells is the cell recorded as the neighboring cell in the allowed cell information acquired at the first timing and the cell recorded as the neighboring cell in the allowed cell information acquired at the second timing. It shows how much is matched. Although various calculation methods can be applied to the coincidence rate, for example, it can be calculated by [number of matching cells] / [total number of old and new neighboring cells (number excluding duplication)].

  When the coincidence rate is equal to or higher than a predetermined threshold, that is, when it is considered that the old and new adjacent cells have not changed substantially (S273 / YES), it is determined that there is no problem. That is, in this case, if the relay apparatus 20 is not moving, it is considered that the previous neighboring cell and the current neighboring cell should be almost the same. If the old and new adjacent cells are different (S273 / NO), there is a high possibility that the relay device 20 has moved, and therefore, the necessary steps are taken.

  Here, it is conceivable to determine the matching rate in a plurality of stages. If the match rate is not 100% (complete match) but matches to some extent (100%> match rate> threshold), it can be estimated that the relay device 20 has moved but the moving distance is not large. For example, this is a case where the installation position of the relay device 20 is moved to change the room layout. In such a case, it is considered that there is no problem in making an emergency call. Therefore, when it is determined that such a coincidence rate is obtained, a point that is suspected of moving on the system may be recorded. The wireless communication carrier should go to the inspection of the relay device at a later date and inspect for any problems.

  On the other hand, when the matching rate is low (threshold ≧ matching rate ≧ 0%), it can be estimated that the relay device 20 has been intentionally moved greatly. For example, it is a case where the relay device 20 is transported to a completely different place and reinstalled. In such a case, there is obviously a problem in making an emergency call. Therefore, when it is determined that such a coincidence rate is obtained, the process proceeds to a measure for immediately stopping the use of the relay device 20, for example, a wave stop instruction shown in FIG. 3 (S280). When shifting to the stop instruction, the stop unit 70 instructs the acquisition unit 40 to stop (S280).

  With reference to FIG. 7, the stop instruction of the relay apparatus in this embodiment is further demonstrated. As illustrated in FIG. 7, when the determination unit 50 detects the movement of the relay device 20, the wave stopping unit 70 instructs the acquisition unit 40 to stop the wave of the relay device 20 determined to have moved. Receiving the wave stop instruction, the acquisition unit 40 prohibits connection to the terminal device 10 by the relay device 20 determined to have moved. For example, SOAP is adopted as the communication method for stopping the wave. Here, SOAP is a specification of a communication protocol for exchanging structured information in the implementation of a Web service in a network.

  Next, a specific example of adjacent cell comparison will be further described with reference to FIG. As shown in FIG. 8, the comparison between the old and new neighboring cells is performed by verifying items of an old donor cell, a new donor cell, an old neighboring cell, a new neighboring cell, the number of neighboring cells (new and old total), a matching number, a matching rate, and a threshold value. The old donor cell is a cell that has been recorded as a donor cell in the first timing, that is, the previously acquired allowable cell information (previous allowable cell information). The new donor cell is a cell recorded as a donor cell in the second timing, that is, the allowable cell information newly acquired this time (current allowable cell information). The old neighbor cell is a cell recorded as a neighbor cell in the previous allowable cell information. The new adjacent cell is a cell recorded as an adjacent cell in the allowable cell information this time. The number of adjacent cells is the total number of cells recorded as adjacent cells in the previous allowable cell information and cells recorded as adjacent cells in the current allowable cell information (after eliminating duplication). The number of matches is the number of adjacent cells that match when the previous allowable cell information and the current allowable cell information are compared. The matching rate is calculated by a predetermined calculation formula, for example, “number of matches” ÷ “number of adjacent cells”. Here, the threshold value of the coincidence rate is a threshold value for instructing to stop the wave, and is set to, for example, 50% or more.

  In case # 1 of FIG. 8, for example, when the old donor cell is A, the new donor cell is B, the neighboring cells are B and C, and the new neighboring cell is C, the new donor cell is included in the old neighboring cell. is there. This is a case where a failure continues in the old donor cell A in step S271 / YES in FIG. 5, and it is determined as OK. In case # 2, when the old donor cell is A, the new donor cell is X, the adjacent cells are B and C, and the new adjacent cells are A, B, and C, the old donor cell is included in the new adjacent cell. . This is a case where a macro cell base station is newly installed in the vicinity in step S272 / YES in FIG. 5, and it is determined to be OK.

  In case # 3, for example, when the old donor cell is X, the new donor cell is Y, the adjacent cells are A, B, and C, and the new adjacent cells are A, B, and C, the number of adjacent cells is 3, and the number of matches is 3, the coincidence rate is 100%. This is a case where the old and new adjacent cells completely match at step S273 / YES in FIG. 5, and it is determined as OK. In case # 4, for example, when the old donor cell is X, the new donor cell is Y, the adjacent cells are A, B, and C, and the new adjacent cells are A and B, the number of adjacent cells is 3 and the number of matches is 2. The matching rate is 66%. Since the threshold is set to 50%, it is determined as OK. However, since the matching rate is not 100%, it may be recorded in the system for later confirmation.

  In case # 5, for example, when the old donor cell is X, the new donor cell is Y, the adjacent cells are A, B, and C, and the new adjacent cells are C, D, and E, the number of adjacent cells is 5, and the number of matches is 1, the coincidence rate is 20%. Since this is the case of step S273 / NO in FIG. 5 where the matching rate is less than the threshold, it is determined as NG. In case # 6, for example, when the old donor cell is X, the new donor cell is Y, the adjacent cells are A, B, C, and D, and the new adjacent cells are C and D, the number of adjacent cells is 4 and the number of matches is 2 And the coincidence rate is 50%. Since the coincidence rate is equal to or higher than the threshold value, it is determined as OK.

  In case # 7, for example, when the old donor cell is X, the new donor cell is Y, the adjacent cells are A and B, and the new adjacent cells are A, B, C, and D, the number of adjacent cells is 4 and the number of matches is 2 Thus, the coincidence rate is 50%. Since the coincidence rate is equal to or higher than the threshold value, it is determined as OK. In case # 8, for example, when the old donor cell is X, the new donor cell is Y, the adjacent cell is A, and the new adjacent cells are A, B, and C, the number of adjacent cells is 3, the number of matches is 1, and the match rate Becomes 33%. Since the coincidence rate is less than the threshold value, it is determined as NG.

  In cases # 9 to # 12, all the matching rates are less than the threshold value of 50%, so all are determined to be NG.

  Next, the output of the determination result (FIG. 3: S300) will be described. As the determination result, a plurality of items are recorded for each relay device 20. Items include, for example, relay device name (Node Name), donor cell identification information (latest data), donor cell identification information (past data), neighboring cell identification information (latest data), neighboring cell identification information (past data), neighboring cell The match rate (%), the determination result (OK, NG, monitoring period flag, skip setting flag), and determination date and time. Each item has a determination status of 20 relay units, for example, there is no problem (donor match), there is no problem (adjacent comparison OK), there is a problem, the monitoring period target, or the skip target Depending on whether it is recorded or not recorded. Here, the “monitoring period” means, for example, a certain period (which can be arbitrarily set) from the initial acquisition time of the allowable cell information. For example, during the monitoring period, the movement determination of the relay device 20 is not performed, and only the macro cell information is acquired.

  Next, the suspected movement and the wave stop history will be described. The suspected movement is a history in which it is determined that there is a suspicion of movement for a specific relay device 20 in the determination by the flowchart as shown in FIG. The wave stop history is a history in which a wave stop instruction is actually issued in the determination by the flowchart as shown in FIG. For the suspected movement and the wave stop history, the past n days are recorded. n is a variable value and is adjustable. The suspected movement and the stoppage history are recorded together with remarks on, for example, the relay device name (Node Name), the stop date and time, the stop instruction result, and the stop instruction result details that have been suspected of being moved.

  As described above, in the movement determination system 100 according to the present embodiment, the acquisition unit 40 sets the allowable cell information for identifying the donor cell 30-1 and the adjacent cells 30-2, 30-3, and 30-4 at a predetermined timing. Acquire and accumulate every time. The determination unit 50 determines whether or not the relay device 20 has moved by comparing a plurality of allowed cell information acquired at different timings. Therefore, according to the movement determination system 100 according to the present embodiment, even if the user moves the relay device without permission, the presence or absence of the sequential movement of the relay device 20 can be detected, so that it is possible to prepare for an emergency situation. That is, since the presence or absence of movement of the relay device 20 can be grasped, even when an emergency call is made from the terminal device 10, it is possible to prevent a situation in which the emergency response vehicle cannot reach the location of the terminal device 10 that has made the emergency call. it can.

  Since the determination unit 50 is configured to have a function capable of arbitrarily resetting the allowable cell information corresponding to the predetermined relay device 20, the allowable cell information after resetting is reset by resetting the recorded allowable cell information. Can be treated as the first acquisition.

  Further, the determination unit 50 is configured to arbitrarily prohibit the determination of the presence or absence of movement of the predetermined relay device 20, so that when there is a relay device 20 that does not want to stop the wave, the determination unit 50 The movement determination can be skipped.

  Furthermore, since the determination unit 50 is configured to be able to arbitrarily change the allowable cell information, it is possible to appropriately adjust the setting of the allowable cell information and improve the maintainability and versatility.

  In addition, since the determination unit 50 includes the wave stopping unit 70 that stops the connection to the terminal device 10 for the relay device 20 determined to be moving, continuous use of the relay device 20 suspected of moving Can be prohibited.

  The embodiments described above are for facilitating the understanding of the present invention, and are not intended to limit the present invention. Each element provided in the embodiment, its arrangement, conditions, and the like are not limited to those illustrated, but can be appropriately changed.

DESCRIPTION OF SYMBOLS 10 ... Terminal device, 20 ... Relay device, 30 ... Macrocell base station, 30-1 ... Donor cell, 30-2, 30-3, 30-4 ... Neighbor cell, 40 ... Acquisition part, 50 ... Determination part, 70 ... Stop Wave part, 100 ... movement determination system, 200 ... mobile communication system.

Claims (14)

A movement determination system for determining the presence or absence of movement of a relay device wirelessly connected to a mobile body,
An acquisition unit that acquires and accumulates permissible cell information for each predetermined timing to identify a neighboring cell that can wirelessly connect to a donor cell to which the relay device is wirelessly connected;
A determination unit that determines whether or not the relay device has moved by comparing the plurality of allowed cell information acquired at different timings;
Equipped with a,
The determination unit records a cell recorded as an adjacent cell in the allowed cell information acquired at the first timing as a donor cell in the allowed cell information acquired at a second timing later than the first timing. A movement determination system that determines that the relay device has not moved, assuming that the donor cell has been changed between the first timing and the second timing . The determination unit records a cell recorded as an adjacent cell in the allowed cell information acquired at the first timing as a donor cell in the allowed cell information acquired at a second timing later than the first timing. and if determined that the donor cell between the second timing and the first timing as changed in neighboring cells, the relay device is not moving, the movement determination according to claim 1 system. The determination unit records a cell recorded as an adjacent cell in the allowed cell information acquired at the first timing as a donor cell in the allowed cell information acquired at a second timing later than the first timing. If not, and if it is recorded as an adjacent cell in said allowed cell information cells that are recorded is obtained in the previous SL second timing as the donor cell in the permissible cell information acquired by the first timing The movement determination system according to claim 1 or 2 , wherein it is determined that the relay apparatus is not moving, assuming that a cell is newly established between the first timing and the second timing. The determination unit records a cell recorded as an adjacent cell in the allowed cell information acquired at the first timing as a donor cell in the allowed cell information acquired at a second timing later than the first timing. And if the cell recorded as a donor cell in the allowed cell information acquired at the first timing is not recorded as an adjacent cell in the allowed cell information acquired at the second timing, the first based on the matching rate of the cell that is recorded as an adjacent cell in the permissible cell information acquired in cell before Symbol second timing that is recorded as an adjacent cell in the permissible cell information acquired in the first time, determining the presence or absence of movement of the relay device, according to any one of claims 1 to 3 Movement determination system. It is configured to be able to arbitrarily reset the allowed cell information corresponding to a predetermined relay device,
The movement determination system according to any one of claims 1 to 4 . It is configured to be able to arbitrarily prohibit the determination of the presence or absence of movement for a given relay device,
The movement determination system according to any one of claims 1 to 5 . The allowed cell information is configured to be arbitrarily changeable,
The movement determination system according to any one of claims 1 to 6 . The movement determination system according to any one of claims 1 to 7 , further comprising a wave stopping unit that stops connection to a mobile device with respect to the relay device determined to be moving. The wave stopping unit prohibits connection to the mobile device for a predetermined relay device;
The movement determination system according to claim 8 . A movement determination method for determining presence / absence of movement of a relay device wirelessly connected to a mobile body,
Acquiring and storing permissible cell information for each predetermined timing to identify neighboring cells that can be wirelessly connected to a donor cell to which the relay device is wirelessly connected; and
Comparing the plurality of allowed cell information acquired at different timings with each other to determine whether the relay device has moved; and
I have a,
In the determining step, a cell recorded as an adjacent cell in the allowed cell information acquired at the first timing is recorded as a donor cell in the allowed cell information acquired at a second timing that is later than the first timing. If it is, the movement determination method in which it is determined that the relay device has not moved, assuming that the donor cell has been changed between the first timing and the second timing .   A movement determination system for determining the presence or absence of movement of a relay device wirelessly connected to a mobile body,
  An acquisition unit that acquires and accumulates permissible cell information for each predetermined timing to identify a neighboring cell that can wirelessly connect to a donor cell to which the relay device is wirelessly connected;
  A determination unit that determines whether or not the relay device has moved by comparing the plurality of allowed cell information acquired at different timings;
With
  The determination unit records a cell recorded as an adjacent cell in the allowed cell information acquired at the first timing as a donor cell in the allowed cell information acquired at a second timing later than the first timing. In this case, the movement determination system determines that the relay device has not moved, assuming that the donor cell has been changed to a neighboring cell between the first timing and the second timing.   A movement determination system for determining the presence or absence of movement of a relay device wirelessly connected to a mobile body,
  An acquisition unit that acquires and accumulates permissible cell information for each predetermined timing to identify a neighboring cell that can wirelessly connect to a donor cell to which the relay device is wirelessly connected;
  A determination unit that determines whether or not the relay device has moved by comparing the plurality of allowed cell information acquired at different timings;
With
  The determination unit records a cell recorded as an adjacent cell in the allowed cell information acquired at the first timing as a donor cell in the allowed cell information acquired at a second timing later than the first timing. And if the cell recorded as a donor cell in the allowed cell information acquired at the first timing is recorded as an adjacent cell in the allowed cell information acquired at the second timing, the The movement determination system which determines with the said relay apparatus not moving as what the cell was newly established between the 1st timing and the said 2nd timing.   A movement determination system for determining the presence or absence of movement of a relay device wirelessly connected to a mobile body,
  An acquisition unit that acquires and accumulates permissible cell information for each predetermined timing to identify a neighboring cell that can wirelessly connect to a donor cell to which the relay device is wirelessly connected;
  A determination unit that determines whether or not the relay device has moved by comparing the plurality of allowed cell information acquired at different timings;
With
  The determination unit records a cell recorded as an adjacent cell in the allowed cell information acquired at the first timing as a donor cell in the allowed cell information acquired at a second timing later than the first timing. And if the cell recorded as a donor cell in the allowed cell information acquired at the first timing is not recorded as an adjacent cell in the allowed cell information acquired at the second timing, the first Based on the coincidence rate between the cells recorded as neighboring cells in the allowed cell information acquired at timing 1 and the cells recorded as neighboring cells in the allowed cell information acquired at the second timing, A movement determination system for determining whether or not a relay device has moved.   A movement determination system for determining the presence or absence of movement of a relay device wirelessly connected to a mobile body,
  An acquisition unit that acquires and accumulates permissible cell information for each predetermined timing to identify a neighboring cell that can wirelessly connect to a donor cell to which the relay device is wirelessly connected;
  A determination unit that determines whether or not the relay device has moved by comparing the plurality of allowed cell information acquired at different timings;
With
  It is configured to be able to arbitrarily prohibit the determination of the presence or absence of movement for a given relay device,
Movement judgment system.